https://sureai.net/forum/viewtopic.php?t=11418
Tilliboy wrote:The Enderal installation will be broken if you update Skyrim (Which "recent" update did you download? There were no updates vor a very long time.) or if you verify the game cache.
Uninstall Enderal completely via the Launcher (Do Not archive it!).
Skyrim will be restored. Verify the Integrity of Skyrim's game cache. Install Enderal again from the installation package with the Launcher.